Design and Experiment of Rare Earth Giant Magnetostrictive Piston Pump

Abstract:

A new piston pump structure was designed by incorporating a rare earth giant magnetostrictive material as the driving source into the basic working principles of piston pumps. The operational process of the proposed magnetostrictive piston pump was analyzed according to the overall structure design, which includes a magnetostrictive rod, drive coils, pump cavity height, one-way valve and pre-pressure mechanism. Analysis was conducted on both the seal and self-suction capacity of the proposed design. The magnetostrictive piston pump was designed to simplify the structure of a conventional piston pump by requiring fewer moving parts, a small volume, being of light weight, and utilizing a precise controllable flow, among other advantages. An experimental prototype was built and an experimental system was designed to test flow and pressure characteristics. Output flow and pressure curves were obtained to analyze the flow instability when exposed to high currents. Experimental results demonstrate that the magnetostrictive piston pump achieves a maximum output flow of 550.65mL/min when the excitation current frequency is 50Hz, and achieves a maximum output pressure of 0.65MPA when the excitation current frequency is 10Hz.

• Periodical: Materials Science Forum (Volume 852)
• Pages: 943-951
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.852.943
• Online since: April 2016
• Authors: Quan Guo Lu, Ya Peng Zhao, Qin Nie
• Keywords: Flow, Magnetostrictive, Piston Pump, Pressure, Rare Earth

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